Hi Loner T
Thanks for reply.
Have reset SMC - no change
Have reset NVRAM - no change
Drive is:
1.0TB OWC Aura SSD for Mac Pro: Internal Solid State Drive Upgrade Kit (with case for removed 250GB SSD to make a 250GB portable SSD)
This is report from terminal:
Martins-Mac-Pro:~ MyMAC-PRO$ diskutil info /
Device Identifier: disk0s2
Device Node: /dev/disk0s2
Whole: No
Part of Whole: disk0
Device / Media Name: Martin's MAC
Volume Name: Martin's MAC
Mounted: Yes
Mount Point: /
File System Personality: Journaled HFS+
Type (Bundle): hfs
Name (User Visible): Mac OS Extended (Journaled)
Journal: Journal size 73728 KB at offset 0x1bf0000
Owners: Enabled
Partition Type: Apple_HFS
OS Can Be Installed: Yes
Recovery Disk: disk0s3
Media Type: Generic
Protocol: PCI
SMART Status: Not Supported
Volume UUID: 19954EE8-5F10-33B8-958D-3C5D3E812FD5
Disk / Partition UUID: D47369CA-3688-4578-A91B-F4C8BA9D7828
Total Size: 959.0 GB (959034236928 Bytes) (exactly 1873113744 512-Byte-Units)
Volume Free Space: 771.5 GB (771456921600 Bytes) (exactly 1506751800 512-Byte-Units)
Device Block Size: 512 Bytes
Allocation Block Size: 4096 Bytes
Read-Only Media: No
Read-Only Volume: No
Device Location: External
Removable Media: No
Solid State: No
Martins-Mac-Pro:~ MyMAC-PRO$
Thanks for taking the time for your help but the problem still exists.
Martin